Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit[10.0.0, ..., 10.4.x-dev] require php >=8.1 -> your php version (7.4.33) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^10.0 -> satisfiable by phpunit/phpunit[10.0.0, ..., 10.4.x-dev].

Process completed with exit code 2.

Your requirements could not be resolved to an installable set of packages. Problem 1 - symfony/panther[v1.0.0, ..., 1.x-dev] require symfony/browser-kit ^4.4 || ^5.0 -> found symfony/browser-kit[v4.4.0-BETA1, ..., 4.4.x-dev, v5.0.0-BETA1, ..., 5.4.x-dev] but these were not loaded, likely because it conflicts with another require. - Root composer.json requires symfony/panther ^1.0 -> satisfiable by symfony/panther[v1.0.0, ..., 1.x-dev].